A real-world approach to common multiples asks learners to find different groups of flowers based on their multiples. Useable as a class activity or independent exercise, they will have to organize their thoughts to explain the totals of...

If you’re going to get a tattoo, make sure your artist writes it right because it’s hard to correct their inkings. That’s the big idea in this short lesson on commonly misspelled words like their/there/they’re and it’s/its.  Images...

Assess whether your class members can comprehend complex informational text with a series of drills based on selections from Emerson, Thoreau, and G.K. Chesterton. The exercises could also be used for group work or a full-class discussion.

Despite English grammar rules, in the e-world the plural of mouse is mouses. lol. Standard American English is constantly evolving. Introduce your class members to a variety of terms that describe different usage changes (economy,...

Explore the effect of outliers through an analysis of mean, median, and standard deviation. Your classes examine and compare these measures for two groups. They must make sense of a group that has a higher mean but lower median compared...

Visionaries create images out of dots to demonstrate the eye-brain connection. Through this activity, they learn that the brain interprets data collected by the eye into recognizable information. Search online for "Jacques Cousteau in...

Construct a three-dimensional optical illusion when your class is exploring vision and how the eye and brain work together. Three concave corners are mounted inside of a black box, but as a light is shined upon them, they appear to be...

Fuzzy edges cause an image to fade from view in an activity intended to demonstrate how vision works. 

Here is a real-world application for systems of equations. When is it better to pay an enrollment fee and lower daily rate, and when is it better to pay the regular price? The local swim center is having a special offer, reductions in...

Explore the measures of central tendency through a challenging task. Given values for the mean, median, mode, and range, collaborative groups create a set of data that would produce those values. They then critique other answers and...

Discover relationships between linear and nonlinear functions. Initially, a set of data seems linear, but upon further exploration, pupils realize the data can model an infinite number of functions. Scholars use multiple representations...

Detailed biography of the American revolutionary writer and thinker Thomas Paine. Includes discussion of the influence of his writing on international affairs.